"Correlation doesn't imply causation, but it does waggle its eyebrows suggestively and gesture furtively while mouthing 'look over there’." is a quote by American xkcd webcomic author Randall Munroe (1984 - ). The quote is found by scrolling over the last panel of the comic at http://xkcd.com/552/.

A poem for use in teaching that causation is not correlation and the Pearson Chi-Square test. The poem was written by Dr. Nyaradzo Mvududu of the Seattle Pacific University School of Education. The poem won a prize in the 2013 CAUSE A-Mu-sing competition.

A joke that might be used in discussing correlation - especially in health studies. The joke is adapted from a joke told by comedic magician Omar Covarrubias. The revised joke was written by Larry Lesser, University of Texas at El Paso, for use in the statistics classroom.

A cartoon for use in discussing the issues of causation versus correlation and the assumptions underlying Structural Equations Modeling (SEM) for students who have been introduced to that technique. The idea for the cartoon came from David Lane of Rice University and the cartoon was drawn by Ben Shabad, a student at the Chicago School of Professional Psychology. The cartoon was awarded a tie...

"The invalid assumption that correlation implies cause is probably among the two or three most serious and common errors of human reasoning" is a quote by American evolutionary biologist Stephen Jay Gould (1941 - 2002). The quote is found in Gould's book The Mismeasure of Man ( 2nd edition, p.242, W.W. Norton Publishing, 1996).